/* * T10 Data Integrity Field CRC16 calculation * * Copyright (c) 2007 Oracle Corporation. All rights reserved. * Written by Martin K. Petersen * * This source code is licensed under the GNU General Public License, * Version 2. See the file COPYING for more details. */ #include #include #include #include #include #include #include static struct crypto_shash *crct10dif_tfm; static struct static_key crct10dif_fallback __read_mostly; __u16 crc_t10dif_update(__u16 crc, const unsigned char *buffer, size_t len) { struct { struct shash_desc shash; char ctx[2]; } desc; int err; if (static_key_false(&crct10dif_fallback)) return crc_t10dif_generic(crc, buffer, len); desc.shash.tfm = crct10dif_tfm; desc.shash.flags = 0; *(__u16 *)desc.ctx = crc; err = crypto_shash_update(&desc.shash, buffer, len); BUG_ON(err); return *(__u16 *)desc.ctx; } EXPORT_SYMBOL(crc_t10dif_update); __u16 crc_t10dif(const unsigned char *buffer, size_t len) { return crc_t10dif_update(0, buffer, len); } EXPORT_SYMBOL(crc_t10dif); static int __init crc_t10dif_mod_init(void) { crct10dif_tfm = crypto_alloc_shash("crct10dif", 0, 0); if (IS_ERR(crct10dif_tfm)) { static_key_slow_inc(&crct10dif_fallback); crct10dif_tfm = NULL; } return 0; } static void __exit crc_t10dif_mod_fini(void) { crypto_free_shash(crct10dif_tfm); } module_init(crc_t10dif_mod_init); module_exit(crc_t10dif_mod_fini); MODULE_DESCRIPTION("T10 DIF CRC calculation"); MODULE_LICENSE("GPL"); MODULE_SOFTDEP("pre: crct10dif"); 1f60a4b86b75c0521053f'>refslogtreecommitdiff
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authorFlorian Fainelli <f.fainelli@gmail.com>2016-03-10 15:34:16 -0800
committerBoris Brezillon <boris.brezillon@free-electrons.com>2016-04-19 22:04:51 +0200
commit269ecf03a5b32b0d1de1f60a4b86b75c0521053f (patch)
tree16470557542b82e8e08cc89e18d9dd4bb10ec0ab /Documentation/devicetree/bindings
parent2d472aba15ff169a30dc3661f837d8535af9b9ee (diff)
mtd: brcmnand: Add support for v6.2 controllers
Document and match the brcm,brcmnand-v6.2 compatible string, the controller has a register layout identical to the v6.0 version and supports prefetch. Update the command shift logic to account for v6.2 controller which are the first ones to use a shift of 0 (6.1 used a shift of 24). Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'Documentation/devicetree/bindings')